State-owned oil firms today cut jet fuel,or ATF, prices by 4 percent. this is the first reduction in rates since July, on softening of international oil prices. According to an official of Indian Oil Corp,Aviation Turbine Fuel rates in Delhi will come down by 1,715 rupees per kilolitre to 40,138 rupees per from midnight tonight. The reduction follows two successive rise in prices on August 1 and 16. In Mumbai, the price of ATF were reduced by 1,800 to 41,388 rupees per kl.